Safety guard for ripsaws



Aug. 21, 1928.

J. H. WULF SAFETY GUARD FOR RIPSAWS Original Filed April 20. 1925 2 Sheets-Sheet 1 Aug. 21, 192 8.

J. H. WULF SAFETY GUARD FOR RIPSAWS Original Filed April 20, 1925 2 Sheets-Sheet 2 ATTCRNEY wmyxzxialw for protecting Patented Aug. 21, 1928.

UNITED STATES JOSEPH H. W'ULF, OF TELL CITY, INDIANA.

SAFETY GUARD FOR RIPSAN S.

Application filed My present invention has reference to a means for preventing flying clnps from contacting and injuring the operator of a circular rip saw, and for likewise preventing such injury to persons in close proximity to the saw.

A further object is the provision of a safety guard for circular saws which is yieldably supported over the saw so that the same will give in an upward direction when the work is fed to the same but which is provided with means for closing the outer side and rear thereof to prevent the flying chips, splinters or dustwhich might inflict injury to the attendant or persons in close proximity to the same.

A still further object is the provision of a safety guard for rip or other saws and means persons in close proximity to the saws from injury by the flying chips, etc, and means for feeding the work to the saw.

Vith the above recited objects in view, and others which will present themselves the nature of the invention is better understood, reference is to be had to the drawings, which accompany and form part of this application.

In the drawings Figure 1 is a top plan view illustrating the application of the improvement.

Figure 2 is a side elevation thereof.

Figure 3 is a sectional view on the line 33 of Figure 1.

Figure 4 is a sectional view on the line H of Figure 3.

Figure 5 is a sectional view on the line 55 of Figure 3.

Figure 6 is a of one of the for the guard,

Referring now to the drawings in detail, the numeral 1 designates the bed for the saws. The bed is provided with spaced longitudinal slots through which project the upper portions of the circular saws 2. Any desired number of saws may be employed, and all the saws are mounted on the same shaftwhich is revolved in the usual manner.

Having its base secured on the bed 1, outward with respect to the saws 2, there is a standard 3. The standard has its top provided on its edges with lugs 4;. Between these fragmentary perspective view elements constitutlng the gate lugs there is secured a shaft or pintle for a spring arm 5. The spring 5 has its outer end rounded to provide a bearing for a second and elongated shaft 6.. This shaft 6 finds bearings 7 in a substantially rectangular frame 8.

April 20, 1925, Serial No. 24,542. Renewed June 29, 1928.

Passing through the bearings and fixing the shaft 6 to the frame 8 there are set screws 9. The shaft (3 is arranged so that one of its ends projects over the bed and over the saws 2, and this portion of the shaft is fixed by a setscrew 10 in a bearing 11 secured on the reticulated top 12, of the guard 13. The side of the guard, adjacent to the frame 8, is open as is the rear thereof, but the outer side and the end thereof next to the standard 3 are closed. The reticulated portions of the guard are sccured in a metal frame broadly indicated by the numeral 14. The guard is of a width to snugly receive the saws 2 thereinand of a length greater than that of the frame 8.

n the fraine 8 there is an upstanding lug 14 to which is pivotally connected a link 15 andthis link has its free end pivotally secured to a lug 16 which projects from the standard 3.

The sides of the frame 8 having depending plates 17 which are arranged in aligning pairs, the said lugs or plates having bearing openings for shafts 18 and 19, respectively. On the shaft 19, at the portion thereof that is received in the guard 12, there is a roller 20. The roller 20 has peripherally extending spaced series of teeth 21, and these teeth are arranged between the planes of the spaced saw blades 2. The shaft 18 is of a less length than the shaft 19, and projects only a comparatively short distance into the guard 12. On the end of this shaft 18 there is fixed a single roller 22 having on its inner face a toothed or corrugated wheel or disc 23. The roller 22 is arranged directly over the inner saw 2;

At the open end of the frame for the guard 12, th re is fixed a shaft 2 1-. 7 arranged at the upper corner of the end frame and supports thereon any desired number of plates in the nature of dogs The dogs 25 have their outer or free ends cut at the same angle, as indicated by the numeral 26 while their upper ends, adjacent to their pivotal connection, with the shaft 24-, are formed with fingers 27. The dogs 25, incident to their weight, will gravitate toward the bed and the fingers 2T contacting with the rear portion of the frame for the guard will limit the swinging of the said dogs in such direction. The dogs are held in spaced relation by washers 28 on the shaft 24. The dogs resting on the work *ill prevent retrograde movement thereof.

Pivotally secured to the outer side of the This shaft is frame for the guard there are links 30, and to 1 the outer ends of these links there is pivotally secured a plate 31. V

A board 32 to'be cut into strips is arranged on the bed 1 and is slid through the gate into the guard. The plates comprising the gate will rest on the upper face of the board. The outer ends of the shaftslS- and 19 have secured thereon pulley wheels 33, around which is trained a belt (not shown) connected to a suitable source of power, (not shown). The corrugated or toothed portion 23 of the roller 22 will engage the board to move the same toward the saws. I As the board is cut into strips the toothed portions 2101f the rollers 20 will engage wit the several strips to force the board longitudinally on the bed 1. The guard will prevent chips flying upwardy or outwardly therefrom. The dogs, as stated will prevent retrograde movement of the work. XVhen the board is cut into strips and is passed on the bed through the guard, the guard incident to the weight thereof and the influence of the spring 5 thereon will drop to initial position on the bed. The reticulatedbody of the guard permits the vattendant observing the operation of the saws It is believed that the foregoing description will fully set forth the simplicity of my construction to those skilled in the art to which such inventions relate, but it is to be understood that I do not wish to be restricted to the precise details herein set forth and hold myself entitled to make such changes therefrom as fairly fall within the scope of my claim.

The pivots 50, which connect the links 30 with the guard plate 31 are removable and are designed to pass through any one of a plurality of openings 51 in the guard plate 81. This permits of the guard plate being adjustable to compensate for the varying thicknesses of the work operated on by the saws. V I

Having described the invention, I claim The combination with rotary saws anda bed therefor, of a standard fixed on the bed at one side of the saws, a substantially rectangular frame member opposite the standard, a pivoted link connection between the frame member and the standard, depending elements on 'the frame member, shafts journaled therethreugh, and saw work engaging rollers fixed on the ends of the shafts, an upper shaft fixed on the frame and extending over the bed above the saws, a spring fixed on this shaft and fixed on the standard and urgin g the shaft and frame in the direction of the saw bed, and a saw guard removably fixed on the outer end of the last mentioned shaft;

In testimony whereof I aflix my'signature.

JOSEPH H. were. 

